String Vibrator

thingiverse

I'm going to spin this text for you. This clever motorized string setup offers a straightforward way to connect a switch, a D-cell battery holder, and a compact motor. The motor is equipped with an offset weight that ensures smooth continuous oscillation at all times. When suspended from a string, standing waves in the string become visible when its length (and other characteristics) align perfectly with the frequency of the motor's oscillation. A wide variety of oscillating modes can be easily observed. This creation was designed using Tinkercad. Edit it online at https://www.tinkercad.com/things/27s2k9OngTr